Amplifiers – With control of power supply or bias voltage – With control of input electrode or gain control electrode bias
Patent
1996-10-17
1998-11-17
Mullins, James B.
Amplifiers
With control of power supply or bias voltage
With control of input electrode or gain control electrode bias
330279, H03G 330
Patent
active
058381945
ABSTRACT:
Constant setting time is achieved in automatic gain control (AGC) circuits having a variable gain amplifier (VGA) and a feedback loop with a loop filter, where the VGA has a non-exponential gain characteristic and the loop filter is allowed to be non-linear. This design differs from traditional AGC circuits in which the VGA had an exponential gain characteristic and the loop filter was linear. Relaxation of these requirements as provided by the invention permits AGC circuits to be implemented in MOS and other technologies in which AGC circuits of traditional designs are difficult to implement.
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Lucent Technologies - Inc.
Mullins James B.
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